Question about 1999 GMC Suburban
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The service engine light means there is a diagnostic trouble code (DTC) stored by the vehicle's computer. This could be anything from a faulty sensor to a bad exhaust system. You should have the codes retrieved by a diagnostic scanner. Most part stores will do this free of charge and give you the code numbers. Once you get the numbers, let me know what they are and I can further troubleshoot the issue for you.
Posted on May 24, 2009
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Posted on Jan 02, 2017
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